A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_IAM_CHECKER_ENDPOINT=... overrides the EndpointOption (which defaults to "policytroubleshooter.googleapis.com") used by MakeIamCheckerConnection().
GOOGLE_CLOUD_CPP_POLICY_TROUBLESHOOTER_ENDPOINT=... overrides the EndpointOption (which defaults to "policytroubleshooter.googleapis.com") used by MakePolicyTroubleshooterConnection().
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG to produce any output on the program's console.
See Also
google::cloud::TracingComponentsOptionGOOGLE_CLOUD_CPP_TRACING_OPTIONS=...: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOptionGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-14 UTC."],[[["This document provides versioned documentation for the Policy Troubleshooter, with version 2.37.0-rc being the latest release candidate and version 2.22.0 listed as the current working version at the start of the content."],["Environment variables can be utilized to fine-tune the library's functionality and behavior, particularly during troubleshooting."],["You can override default endpoint settings for IAM Checker and Policy Troubleshooter services using the `GOOGLE_CLOUD_CPP_IAM_CHECKER_ENDPOINT` and `GOOGLE_CLOUD_CPP_POLICY_TROUBLESHOOTER_ENDPOINT` variables, respectively."],["Enabling gRPC tracing and logging can be achieved by setting the `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` environment variables, respectively, which aids in monitoring and debugging the library's operations."],["The environment variable `GOOGLE_CLOUD_PROJECT` can be used in examples and integration testing to configure the GCP project, but will not have an effect on the library itself."]]],[]]
